Kinetics of metal interlayer growth in polyimide films: metal distributions in the non-steady-state regime and with constraints of patterned boundaries

Journal Article · Thu Dec 31 00:00:00 EST 1987 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100311a029· OSTI ID:5286041

Dee, G T; Manring, L E; Mazur, S

Metal interlayers may be deposited in preexisting polymer films by reduction of a metal salt solution which is allowed to diffuse into the bulk of the film from one of its surfaces. The reduction may be effected either by a reducing agent or by mobile electrons in an electrochemically active polymer. The interlayer is composed of microparticles whose spacial distribution within the polymer can vary dramatically depending upon specific process conditions. These morphological variations are illustrated for the case of silver deposition in polyimide film. A kinetic model is described which relates the metal distribution directly to the diffusion of reagents and a second-order reaction rate law. It can be shown that the dominant variations in experimentally observed morphologies are consequences of the relative magnitude of diffusion coefficients and reaction rate constants under various process conditions. The model also provides an accurate prediction of the more complex three-dimensional density distributions obtained when a patterned interlayer is created by means of two-dimensional regulation of the supply of reagents.

• Research Organization: E.I. du Pont de Nemours and Company, Wilmington, DE (USA)
• OSTI ID: 5286041
• Journal Information: J. Phys. Chem.; (United States), Vol. 91:27
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
IMIDES
REDUCTION
SILVER
DIFFUSION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
ELECTROCHEMISTRY
EXPERIMENTAL DATA
POLYMERS
THIN FILMS
CHEMISTRY
DATA
ELEMENTS
FILMS
INFORMATION
KINETICS
METALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
REACTION KINETICS
TRANSITION ELEMENTS
400400* - Electrochemistry